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【摘 要】
：
美国技术通信公司于一九八五年底推出Cipher X5000数据加密装置,该装置采用数据加密标准(DES)算法,以虚线路为基础,按8位密码反馈方式提供数据保密。这是在通透网络中实现的
【出 处】
：
通信技术
【发表日期】
：
1986年02期
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